import { Map } from 'ol'
import Point from 'ol/geom/Point'
import { TEXTLABEL } from '../../Utils/PlotTypes'

/**文本标注 */
class TextLabel extends Point{
    constructor(coordinates, point, params){
        super([])
        
        this.type = TEXTLABEL
        this.options = params || {}
        this.set('params', this.options)
        this.fixPointCount = 1

        if (point && point.length > 0) {
          this.setPoints(point)
        } else if (coordinates && coordinates.length > 0) {
          this.setCoordinates(coordinates)
        }

    }

    
  /**
   * 获取标绘类型
   * @returns {*}
   */
  getPlotType () {
    return this.type
  }

  generate () {
    let pnt = this.points[0]
    this.setCoordinates(pnt)
  }

  /**
   * 设置地图对象
   * @param map
   */
  setMap (map) {
    if (map && map instanceof Map) {
      this.map = map
    } else {
      throw new Error('传入的不是地图对象！')
    }
  }

  /**
   * 获取当前地图对象
   * @returns {{}|*}
   */
  getMap () {
    return this.map
  }

  /**
   * 判断是否是Plot
   * @returns {boolean}
   */
  isPlot () {
    return true
  }

  /**
   * 设置坐标点
   * @param value
   */
  setPoints (value) {
    this.points = !value ? [] : value
    if (this.points.length >= 1) {
      this.generate()
    }
  }

  /**
   * 获取坐标点
   * @returns {Array.<T>}
   */
  getPoints () {
    return this.points.slice(0)
  }

  /**
   * 获取点数量
   * @returns {Number}
   */
  getPointCount () {
    return this.points.length
  }

  /**
   * 更新当前坐标
   * @param point
   * @param index
   */
  updatePoint (point, index) {
    if (index >= 0 && index < this.points.length) {
      this.points[index] = point
      this.generate()
    }
  }

  /**
   * 更新最后一个坐标
   * @param point
   */
  updateLastPoint (point) {
    this.updatePoint(point, this.points.length - 1)
  }

  /**
   * 结束绘制
   */
  finishDrawing () {
  }
}
export default TextLabel